<?php
/**
 * Created by PhpStorm.
 * User: 刚
 * Date: 2017/7/31
 * Time: 22:58
 */
include_once ('BridgeBook.php');

class BridgeBookAuthorTitle extends BridgeBook{
    function showAuthorTitle()
    {
        return $this->showAuthor()."'s".$this->showTitle();
    }
}